Gallery: Disney Cars Land unveiling

Even before the “Cars 2″ movie sequel appeared to be as big a hit as the first, construction crews at Disney California Adventure already were building the new 12-acre Cars Land ( about the size of nine football fields), the largest expansion of the park since it opened 10 years ago.

The expansion, part of a larger revamp of the California Adventure park, officially opened to the public on Friday amid predictable levels of fanfare. Here’s an early look from S.F. Chronicle staffer Jennifer Blot.